4个任豆种源苗期生长节律的研究
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国家"863"科技项目团队课题(2011AA10020203)


Growth rhythm of Zenia insignis seedlings from four provenances
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    摘要:

    【目的】了解4个不同种源任豆Zenia insignis的苗期生长规律.【方法】对任豆容器苗的生长进行定期观测,并采用Logistic方程对其苗高和地径生长曲线进行拟合,估算生长参数.【结果和结论】任豆苗木的年生长节律呈现出“S”型生长曲线,决定系数为0.954~0.983,均达到极显著水平,可以利用Logistic方程对其生长动态进行拟合.不同种源生长节律有所不同,但总体上可划分为4个阶段.即出苗期(3月1日之前)、生长前期(苗高3月1日—4月30日,地径3月1日—4月9日)、速生期(苗高4月30日—9月20日,地径4月9—10月12日)、生长后期(苗高9月20日之后、地径10月12日之后).但是,不同种源4个阶段的起止时间和持续时间有一定的差异.

    Abstract:

    【Objective】 The purpose of this study was to understand the seedling growth rhythm of Zenia insignis from four different provenances.【Method】 The container seedling growth rhythm of Z. insignis was observed periodically. The growth curves of seedling height and ground diameter were built using the Logistic equation, and growth parameters were estimated.【Result and conclusion】 The result showed that the growth rhythm showed a “S” type curve. The determination coefficient varied from 0.954 to 0.983, and the fitting degree reached an extremely significant level. Therefore, seedling growth dynamics could be fitted by the Logistic equation. Different provenances showed different growth rhythms, but seedling growth of Z. insignis could be divided into 4 stages in general. The seedling germination stage was before March 1st; the early growth stage was from March 1st to April 30th in height, and from March 1st to April 9th in diameter; the fast-growing stage was from April 30th to September 20th in height, and from April 9th to October 12th in diameter; late growth stage was after September 20th in height and after October 12th in diameter. However, different provenances of Z. insignis showed differences in the starting and ending time and the duration of the 4 growth stages.

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邝雷,邓小梅,陈思,曲文婷,扎西曲珍,陈晓阳.4个任豆种源苗期生长节律的研究[J].华南农业大学学报,2014,35(5):98-101

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  • 收稿日期:2013-09-03
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  • 在线发布日期: 2014-07-29